Original Fender® High-quality Micarta (synthetic bone) string nut for 5-string electric basses with modern 9.5" radius fingerboards. Pre-slotted with string location grooves to make spacing and positioning a breeze when performing the final string slot filing. Please note: Some filing and shaping modification is required to ensure proper fit and performance. 9.5" (241mm) top radius, 6.75” (171.45mm) bottom radius, 1.875" (47.6 mm) wide. Used on the American Standard 5-string Precision/Jazz Basses and other US and Mexico made 5-string basses.